| 文丘里泵提高剩余污泥重力浓缩效率的研究 |
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| 引用本文： | 余召辉,兰思杰,赵由才.文丘里泵提高剩余污泥重力浓缩效率的研究[J].安徽农业科学,2013(24):10089-10091. |
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| 作者姓名： | 余召辉 兰思杰 赵由才 |
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| 作者单位： | 同济大学污染控制与资源化利用国家重点实验室,上海200092 |
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| 基金项目： | 上海市科委科技攻关项目（11DZ1211303）. |
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| 摘 要： | 目的]研究文丘里泵对剩余污泥重力浓缩效率的影响.方法]将移动式板箱放入重力浓缩池的污泥中,利用文丘里泵进行负压抽水,用空气压缩机逆向吹脱板箱外面的泥饼,测量浓缩后的污泥含水率.结果]文丘里泵对移动式板箱的单次抽吸最佳时间为6min,压力为-0.08 MPa;空气压缩机逆向吹脱移动式板箱外泥饼的最佳输出压力是0.4 MPa,通气时间是8s.负压抽吸和逆向吹脱轮流进行,可以使重力浓缩池的停留时间缩短至60 min,比传统方法所用时间缩短91.7％,浓缩后污泥的最终含水率可降低到96.3％.结论]文丘里泵和移动式板箱组合使用可以显著提高污泥重力浓缩的效率.
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| 关 键 词： | 文丘里泵 移动式板箱 剩余污泥 重力浓缩 |
Study on Improving Sludge Gravity Concentrate Efficiency by Venturri Pump |
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| Institution: | YU Zhao-hui et al ( State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tong3i University, Shanghai 200092) |
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| Abstract: | Objective] The effect of Venturri pump in sewage sludge gravity concentrate efficiency was investigated, Method] Mobile boxes were pumped by Venturri pump and blew reversely to dislodge the sludge cake by air compressor in sludge gravity concentrate pond. The mois- ture content of concentrated sludge was determined. Result] The best parameters were 6 minutes, - 0.08 MPa for Venturri pump and O. 4 MPa, 8 seconds for air compressor. With negative pressure pumping and reversal blowing in turn the sludge remain time was decreased to 60 minutes, 91.7% comparing with traditional method, and the moisture content of concentrated sludge was decreased to 96.3%. Conclusion] The efficiency of sludge gravity concentrate was improved remarkably with using a combination of Venturri pump and mobile boxes. |
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| Keywords: | Venturri pump Mobile boxes Sewage sludge Gravity concentrate |
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